CVE-2026-79771

Nokogiri versions before 1.19.3 contain a memory leak in the XSLT Stylesheet transform method when processing Ruby strings containing null bytes. Attackers can exploit this by passing attacker-controlled input with null bytes to transform parameters, causing heap allocations to leak and enabling denial of service against long-running processes.

Scoring

Severity

MEDIUM

CVSS base score

6.9

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

EPSS probability

0.30%

CWE

CWE-401

Published

2026-08-25

Last modified

2026-08-25

Affected products

• sparklemotion nokogiri
• sparklemotion nokogiri

Weakness type

• CWE-401

Related vulnerabilities

• CVE-2026-69781 — Windows DHCP Client Denial of Service Vulnerability
• CVE-2026-69809 — Windows Active Directory Domain Services Denial of Service Vulnerability
• CVE-2026-69497 — Windows DHCP Server Denial of Service Vulnerability
• CVE-2026-69405 — Windows DHCP Server Denial of Service Vulnerability
• CVE-2026-70065 — Windows DHCP Server Denial of Service Vulnerability
• CVE-2026-69588 — Windows TCP/IP Denial of Service Vulnerability
• CVE-2026-16028 — Protocol::HTTP2 versions before 1.14 for Perl allow memory exhaustion via closed streams that stream_state never removes from the connection stream table
• CVE-2026-18313 — rpcapd memory leak in libpcap before 1.10.7

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